2007’ Suzuki SX4 Stumbles Off Idle (No Fix) P1-2

Red herrings don’t help, as I endeavour to make some sense of this issue.
Subject vehicle has 332,000 kilometres on the clock.

[@davesterl]

You wanna hold the revs about 2k for about 10 seconds to see if your stft drops. If so, you have a vacuum leak. In your previous vid I think there was an evap code so I would pull the purge valve from the intake, block the hole with your finger, see if trims recover. If so, stuck open purge valve giving you a leak you won't see with smoke. Seems the previous vid is deleted so can't check

[@TheGibby3340]

Yeah it’s not on the vid but I did that Dave. With increased RPM the trims do go down but not that much. Still quite high. I removed the purge valve yesterday and it’s associated plumbing, it smoke & pressure checked ok. The problem with smoking the manifold is your actually pressurizing it (all be it very very low px). The vacuum leak may not manifest. That MAF is not right…

[@davesterl]

@@TheGibby3340 if trims do not recover when holding revs then test fuel pressure and look for unmetered air

[@TheGibby3340]

@davesterl 60 psi F/P even under racing. >19 inHg vacuum @ idle. Smoked the hell outta the thing X3. 🤷‍♂️

[@captaintruth3219]

Have a similar problem with my 2007 Suzuki SX4 stumbles whenever it rains.Worse than my Irish uncle, but he was easy to fix. We just hid the alcohol🍺. Mine’s been doing that about 5 years misfires then I just drive it about a mile stop and turn the key off wait about 60 seconds start it up and she’s good to go for the rest of the day until rains again. 🚙🌧️🅿️🚙👈👀

[@TheGibby3340]

I had a similar “conditions” related issue some time back. Here the issue if your interested. Thx for watching 🍀👍 kzbin.info/www/bejne/anPNf4qpnphjf8Usi=QX1dMSPE-VWdJv-k

[@matthewmmuchesko3098]

Sounds like the throttle motors not responding fast enough or the mass air is going bad I had that happen in my in my Grand Vitara if you can't find any mass air flow sensor let me know or throttle bodies have like four of them and I have a couple mass air flow sensors aftermarket ones won't work

[@TheGibby3340]

Thx for the suggestion and kind offer. And thanks for watching 🍻

[@theGADGETSplaylist]

you could swap those 2 MAF sensors?

[@TheGibby3340]

Yes I plan on doing just that Denis. Didn’t yesterday as the rain was relentless. 🍻

[@hnd2893]

Is the upstream O2 sensor an AFR type? Odometer reading?

[@TheGibby3340]

Yes upstream is an A/F sensor. Current odometer readings is 332,000 kilometres. Thx for watching 🍻

[@hnd2893]

@@TheGibby3340 If you haven't yet, pick a few more PIDs to observe, Engine Load (calculated), AFR sensor current, Lambda or EQ, Rear O2 volts, EGR duty, gather more data, build a picture, ect, or just scan and compare to your known-good parked in the driveway. I assume you've inspected and cleaned the MAF. Unplug the MAF, make sure the ECM will recognize it's unplugged and code for it. Have you tried the Blue Driver Bluetooth scanner, with it's Mode 6 deciphering capabilities? Either the MAF is skewed or the engine is getting air from somewhere else. PCV? Fuel pump volume? You've probably have already fixed it, Thanks for reading :O)

[@TheGibby3340]

@hnd2893 Thx for the suggestions. I wish it was fixed 🤣 I am turning my attention to the PCV system. Still considering if a PCV issue could cause these symptoms. Thx again 🍻